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Luba_88 [7]
2 years ago
7

Rearrange the equation so w is the independent variable. -2u+6w=9

Mathematics
2 answers:
rewona [7]2 years ago
8 0

Answer:

-2u+6-9=w

-2u-3=w

u need to switch w from lhs to rhs and 9 from rhs to lhs

Korvikt [17]2 years ago
7 0

Answer:

w = \frac{9+2u}{6}

Step-by-step explanation:

Given

- 2u + 6w = 9

Isolate 6w by adding 2u to both sides

6w = 9 + 2u ( divide both sides by 6 )

w = \frac{9+2u}{6}

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A large city newspaper periodically reports the mean cost of dinner for two people at restaurants in the city. The newspaper sta
inysia [295]

Answer: C) 133

Step-by-step explanation:

The formula to find the sample size is given by :-

n=(\dfrac{z^*\cdot\sigma}{E})^2

, where z* = Critical z-value

\sigma = Population standard deviation for prior study.

E= Margin of error.

As per given , we have

\sigma=$35

E= 5

The critical z-value for 90% confidence level is 1.645.

Substitute al;l the value sin the above formula  , we get

n=(\dfrac{1.645\times 35}{5})^2

n=(\dfrac{57.575}{5})^2

n=(11.515)^2

n=132.595225\approx133

Hence, the minimum sample size needed is 133.

Thus , the correct answer is : C) 133

6 0
3 years ago
A train travels 4.4 miles in
Ugo [173]

Answer:

63.8 miles

Step-by-step explanation:

If the train travels 4.4 miles in 4 minutes, then you have to divide 4.4/4 to find the miles the train travels per minute.

4.4/4 = 1.1

So, since the train travels 1.1 miles per minute, and we want to know how fast it travels in 58 minutes, we have to multiply 1.1 by 58. Since 1.1 is a decimal number, we have to multiply both sides by 10 to get 11x580.

11x580 = 5800+ 580 = 6380

Since we multiplied both numbers by 10, we have to divide 6380 by 100.

6380/100 = 63.8

So, the train travels 63.8 miles in 58 minutes.

3 0
2 years ago
12.Divide. (x^2+2x+1/x^2-8x+16)/(x+1/x^2-16
lina2011 [118]
For this case we have the following expression:
 (x ^ 2 + 2x + 1 / x ^ 2-8x + 16) / (x + 1 / x ^ 2-16)
 Rewriting we have:
 (((x + 1) (x + 1)) / ((x-4) (x-4))) / (x + 1 / ((x + 4) (x-4)))
 Then, we cancel similar terms:
 ((x + 1) / (x-4)) / (1 / (x + 4))
 Rewriting:
 ((x + 1) (x + 4)) / (x-4)
 Answer:
 
((x + 1) (x + 4)) / (x-4)
3 0
3 years ago
A square garden is 12 m long. A hedge wall 1 meter wide surrounds
sammy [17]
I think it only surrounds 1 meter because it’s a meter long
4 0
3 years ago
Is andies solution correct
Nadusha1986 [10]
The solution is correct.
3 0
3 years ago
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